Hydrophilized cellulose esters, process for their preparation, their use
as biomedical materials and contact lenses produced from these
    2.
    发明授权
    Hydrophilized cellulose esters, process for their preparation, their use as biomedical materials and contact lenses produced from these 失效
    亲水性纤维素酯,其制备方法,它们作为生物医学材料和由其制备的隐形眼镜

    公开(公告)号:US4532277A

    公开(公告)日:1985-07-30

    申请号:US565589

    申请日:1983-12-27

    申请人: Frank Wingler

    发明人: Frank Wingler

    CPC分类号: C08F251/02 C08L1/10

    摘要: Contact lenses and implants for human medicine can be fabricated from a polymer blend comprising 98-80% by weight of component A and 2-20% by weight of component B wherein:component A is a cellulose ester of an aliphatic carboxylic acid with up to 40% by weight of total component A of an ethylene/vinyl acetate copolymer having 30-98% by weight, relative to ethylene/vinyl acetate, of incorporated vinyl acetate andcomponent B is a homopolymer or copolymer of water-soluble vinyl monomers and up to 10% by weight relative to the total polymer B of multifunctional crosslinker vinyl compounds.

    摘要翻译: 用于人类医学的隐形眼镜和植入物可以由包含98-80重量%的组分A和2-20重量%的组分B的聚合物共混物制成,其中:组分A是脂肪族羧酸的纤维素酯, 乙烯/乙酸乙烯酯共聚物的总组分A的40重量%,相对于乙烯/乙酸乙烯酯,含有乙酸乙烯酯和组分B的30-98重量%是水溶性乙烯基单体的均聚物或共聚物 至10重量%,相对于多官能交联剂乙烯基化合物的总聚合物B.

    Thermoplastic moulding compositions
    3.
    发明授权
    Thermoplastic moulding compositions 失效
    热塑性成型组合物

    公开(公告)号:US4205140A

    公开(公告)日:1980-05-27

    申请号:US852628

    申请日:1977-11-18

    摘要: A thermoplastic moulding composition comprising:(1.) 80 to 20 parts by wt. of a thermoplastic polycarbonate based on a dihydroxy diaryl alkane,(2.) 20 to 80 parts by wt. of a graft polymer of2.2. a monomer mixture, polymerized onto2.1. a diene rubber with a glass transition temperature below -30.degree. C., of2.2.1. 95 to 50% by wt. of styrene, methyl methacrylate or a mixture thereof; and2.2.2. 50 to 5% by wt. of acrylonitrile, methacrylonitrile or a mixture thereof, the ratio by wt. of rubber (2.1) to monomer mixture (2.2.) being in the range of from 80:20 and 10:90, and the moulding composition containing from 5 to 35% by wt. of the rubber (2.1.), and(3.) 5 to 75 parts by wt. of a copolymer which is chemically uniform in structure and which comprises:(3.1.) 93 to 50 parts by wt. of styrene, methyl methacrylate or a mixture thereof;(3.2.) 40 to 5 parts by weight of acrylonitrile, methacrylonitrile or a mixture thereof; and(3.3.) 2 to 30 parts by wt. of maleic acid anhydride.

    摘要翻译: 一种热塑性模塑组合物,其包含:(1)80〜20重量份 的基于二羟基二芳基烷烃的热塑性聚碳酸酯,(2.)20至80重量份。 的2.2的接枝聚合物。 单体混合物,聚合到2.1上。 二烯橡胶,玻璃化转变温度低于-30℃,为2.2.1。 95〜50重量% 的苯乙烯,甲基丙烯酸甲酯或其混合物; 和2.2.2。 50〜5重量% 丙烯腈,甲基丙烯腈或其混合物,重量比。 的橡胶(2.1)与单体混合物(2.2。)的摩尔比为80:20和10:90,模塑组合物含有5-35重量% 的橡胶(2.1。)和(3.)5〜75重量份。 的共聚物,其结构化学均匀,并且包括:(3.1。)93至50重量份。 的苯乙烯,甲基丙烯酸甲酯或其混合物; (3.2。)40-5份(重量)丙烯腈,甲基丙烯腈或其混合物; 和(3.3。)2〜30重量份。 的马来酸酐。

    Pulverulent binders
    4.
    发明授权
    Pulverulent binders 失效
    粉末粘合剂

    公开(公告)号:US3935138A

    公开(公告)日:1976-01-27

    申请号:US473391

    申请日:1974-05-28

    摘要: Powdered coating agent for use in the sprayed powder process comprising a mixture ofA. free hydroxyl groups containing copolymers having been reacted with an acid anhydride;B. a cross-linker such as triglycidyl isocyanurate or bis- or tris-oxazolines and optionallyC. auxiliary agents such as pigments and levelling agents.The copolymer contains polymerized units of30 to 85% by weight of styrene or derivatives thereof or methylmethacrylate or mixtures thereof;5 to 60% by weight of acrylic or methacrylic esters excepted methylmethacrylate and10 to 30% by weight of hydroxyalkylester of acrylic or methacrylic acid, said copolymer having been reacted with an aliphatic or cycloaliphatic dicarboxylic acid anhydride;4 to 20 parts by weight of the cross-linker are employed for 96 to 80 parts by weight of the acidified copolymer.

    摘要翻译: 用于喷雾粉末方法的粉末涂料,其包含含有与酸酐反应的共聚物的A.游离羟基的混合物; B.交联剂如三缩水甘油基异氰脲酸酯或双 - 或三 - 恶唑啉和任选的C.辅助剂如颜料和流平剂。

    Process for the production of thermoplastic molding materials based on
vinyl polymers
    7.
    发明授权
    Process for the production of thermoplastic molding materials based on vinyl polymers 失效
    用于生产基于乙烯基聚合物的热塑性成型材料的方法

    公开(公告)号:US4181788A

    公开(公告)日:1980-01-01

    申请号:US908763

    申请日:1978-05-23

    摘要: A process for the production of thermoplastically processible moulding materials based on vinyl polymers of high chemical and molecular uniformity and having residual monomer contents of less than 0.1 mol % which comprises the steps of:(i) mass homogeneous phase polymerization of at least one vinyl monomer in a stirred continuously charged tank reactor to a conversion of from 25 to 60 mol %;(ii) directly concentrating the syrup consisting of residual monomers and vinyl polymer dissolved therein obtained from step (i) in a spiral tube evaporator at a temperature of from 60.degree. to 250.degree. C. and at a pressure of 100 m bar to 35 bar to obtain a solid content of vinyl polymer of from 40 to 90 mol %;(iii) directly charging the concentrate obtained from step (ii) to the inlet zone of a screw evaporator which consists of at least two sequential zones in order to effect further concentration, in which a first zone at a pressure of from 10 to 300 m bar and at a temperature of from 100.degree. to 250.degree. C. concentrates the vinyl polymer to a solid content of from 80 to 99 mol-%, and each subsequent zone at a pressure of 1 to 200 m bar and at a temperature of 150.degree. to 250.degree. C. concentrates the vinyl polymer to a solid content of at least 99.9 %; and(iv) recycling the residual monomers from step (ii) and the residual monomers from said first zone of the screw evaporator to the stirred and charged tank reactor without intermediate cleaning.

    摘要翻译: 一种生产基于乙烯基聚合物的热塑性可加工成型材料的方法,其具有高的化学和分子均匀性并且具有小于0.1摩尔%的残余单体含量,其包括以下步骤:(i)至少一种乙烯基单体的均匀相聚合 在搅拌的连续加入的釜式反应器中以25至60mol%的转化率; (ii)将由步骤(i)获得的残留单体和乙烯基聚合物组成的糖浆直接浓缩在螺旋管式蒸发器中,温度为60-250℃,压力为100巴,至35巴 以获得40至90mol%的乙烯基聚合物的固体含量; (iii)将由步骤(ii)获得的浓缩物直接装入由至少两个顺序区组成的螺杆蒸发器的入口区域,以便进一步浓缩,其中第一区域的压力为10-300μm 并且在100至250℃的温度下将乙烯基聚合物浓缩至固体含量为80至99mol%,并且每个后续区域在1至200mbar的压力和150℃的温度下 DEG至250℃,将乙烯基聚合物浓缩至至少99的固体含量。

    Process for producing ABS moulding compositions having a high rubber content
    8.
    发明授权
    Process for producing ABS moulding compositions having a high rubber content 失效
    具有高橡胶含量的ABS模塑组合物的制造方法

    公开(公告)号:US06482897B1

    公开(公告)日:2002-11-19

    申请号:US08907202

    申请日:1997-08-06

    IPC分类号: C08F27904

    CPC分类号: C08F279/04

    摘要: A process for producing impact-resistant moulding compositions, which is characterised in that a monomer mixture comprising 90 to 20 parts by weight of an aromatic monoalkenyl compound, 10 to 50 parts by weight of an ethylenically unsaturated nitrile, 0 to 30 parts by weight of other copolymerisable compounds is polymerised by a radical mechanism in the presence of 15 to 50 parts by weight, per 100 parts by weight of monomers, of a soluble, gel-free butadiene polymer, and in the presence of 50 to 200 parts by weight, per 100 parts by weight of monomers, of a solvent, wherein the solvent is selected from the group comprising an aliphatic (C1-C8) or cycloaliphatic alcohol, ketone, ether, ester, nitrile (A) or mixtures thereof or a mixture of (A) with an aliphatic (C4-C10), cycloaliphatic or aromatic hydrocarbon (B) in an A:B weight ratio of 100:0 to 30:70, and the polymerisation is conducted as far as a polymer content of the total mixture of 30 to 70% by weight, with thorough mixing and optionally with the subsequent addition of a regulator and initiator, so that the isolated thermoplastic moulding composition contains 20 to 40% by weight of butadiene polymer.

    摘要翻译: 一种耐冲击成型组合物的制造方法,其特征在于,含有90〜20重量份芳香族单链烯基化合物,10〜50重量份烯属不饱和腈,0〜30重量份其它 可共聚合的化合物通过自由基机理在每100重量份单体,每100重量份单体,可溶性,无凝胶的丁二烯聚合物存在下共聚合15至50重量份,并且在50至200重量份的存在下,每100份 单体重量的溶剂,其中溶剂选自脂族(C1-C8)或脂环族醇,酮,醚,酯,腈(A)或其混合物或(A)与 脂族(C 4 -C 10),脂环族或芳族烃(B),其A:B重量比为100:0至30:70,并进行聚合,只要总混合物的聚合物含量为30-70% 重量,充分混合和选择 随后加入调节剂和引发剂,使得分离的热塑性模塑组合物含有20至40重量%的丁二烯聚合物。

    Method of producing ABS moulding compositions
    9.
    发明授权
    Method of producing ABS moulding compositions 失效
    生产ABS成型组合物的方法

    公开(公告)号:US5981644A

    公开(公告)日:1999-11-09

    申请号:US814988

    申请日:1997-03-14

    CPC分类号: C08F279/02 C08F279/04

    摘要: A method of producing ABS moulding compositions wherein a solution of polymers in group (A) solvents is gradually supplied to a polymerizing mixture of previously-formed soluble rubber, aromatic mono-alkenyl compounds, ethylenically unsaturated nitrites, optional other copolymerizable compounds and optionally a group (B) solvent or a mixture of group (A) and group (B) solvents, the gradual addition of the polymer solution to the polymerizing mixture being started before the beginning of phase inversion and at a monomer conversion rate of 5 to 15% and a viscosity of the polymerizing mixture of less than 20 Pa.sec with simultaneous continuation of polymerization, the group (A) solvent is an aliphatic (C.sub.1 -C.sub.8) or cycloaliphatic alcohol, ketone, ether, ester and/or nitrile, and the group (B) solvent is an aliphatic (C.sub.4 -C.sub.10), cycloaliphatic and/or aromatic hydrocarbon.

    摘要翻译: 一种制备ABS模塑组合物的方法,其中将(A)组溶剂中的聚合物溶液逐渐供应到预先形成的可溶性橡胶,芳族单链烯基化合物,烯属不饱和亚硝酸盐,任选的其它可共聚化合物和任选的基团 (B)溶剂或(A)组和(B)组溶剂的混合物中,聚合溶液逐渐加入到聚合混合物中,在相转变开始之前开始,单体转化率为5〜15%, 聚合混合物的粘度小于20Pa·s,同时持续聚合,基团(A)溶剂是脂族(C1-C8)或脂环族醇,酮,醚,酯和/或腈,基团 (B)溶剂是脂族(C 4 -C 10),脂环族和/或芳族烃。